JP3013030B2 - Air purification equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to an air purification device.

[0002]

2. Description of the Related Art Conventionally, for example, harmful gases such as sulfur oxides and nitrogen oxides contained in air in tunnels, harmful substances such as cadmium and its compounds and lead,
2. Description of the Related Art There are various known air purifying apparatuses that generate clean air by removing solid particles such as dust and dust and odor. However, this type of conventional apparatus has a relatively complicated structure and a tendency to be large, so that the installation space is large, and there is a possibility that the installation cannot be performed due to space restrictions, and the purification performance is also reduced. Are disadvantageous in that they are unstable and inferior in reliability, have high initial cost and running cost, are economically disadvantageous, and are difficult to maintain.

[0003]

That is, the conventional air purifying apparatus has a relatively complicated structure and tends to be large, so that the installation space is large, and it is impossible to install the air purification apparatus due to space restrictions. In addition to this, there are drawbacks in that the purification performance is unstable, the reliability is poor, the initial cost and the running cost are high, the economy is disadvantageous, and the maintenance is difficult.

Accordingly, the present invention aims to improve reliability by stabilizing the purification performance, and to reduce the installation space by realizing a simpler structure and downsizing of the device as compared with a conventional air purification device. It is an object of the present invention to provide an air purifying apparatus that can reduce installation constraints to avoid an inability to install the apparatus, reduce initial costs and running costs, make it economically advantageous, and can easily maintain the apparatus. The purpose is.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, an invention according to claim 1 is provided with a closed casing provided with a contaminated air intake and a purified air outlet, and a casing formed inside the closed casing. A purifying passage for communicating the contaminated air intake and the purified air outlet with each other, exhaust means disposed on the purified air outlet side to exhaust the interior of the closed casing to reduce the pressure, and an upstream side of the purification passage. The wet ion exchange means, a stirring means provided downstream of the wet ion exchange means, and a mist collecting means provided downstream of the stirring means. An adsorbent-mixed water supply means for supplying the adsorbent-mixed water to the purifying passage and ejecting the adsorbent-mixed water into the purifying passage; and A water tank for collecting the adsorbent mixed water jetted from the exchange means into the purification passage, and a reflux system for returning the adsorbent mixed water in the water tank to the adsorbent mixed water supply means, A rotary shaft that forms an adsorption treatment agent mixed water introduction passage connected to the adsorption treatment agent mixed water supply unit, and is rotatably supported across the purification passage; and a circle of the rotation shaft. A plurality of fountain holes which are provided in communication with the adsorption treatment agent mixed water introduction passage at predetermined intervals in the circumferential direction and the axial direction and open to the purification passage, and a predetermined interval in the axial direction on the rotating shaft. A plurality of disks that are mounted so as to be able to rotate simultaneously, and have predetermined intervals in the circumferential direction and radial direction of these disks,
And a number of agitation blades mounted so as to protrude in the axial direction of the rotating shaft.

The invention according to claim 2 is characterized in that the adsorbing agent mixed water is a mixed liquid of ceramics and water having a particle size of 1 μm or less.

The invention according to claim 3 is characterized in that the hydrogen ion concentration of the water for the adsorbing agent mixture water is in the range of PH7 to PH8.

According to a fourth aspect of the present invention, the stirring means comprises:
A rotating shaft rotatably supported across the purification passage, a plurality of discs mounted so as to be simultaneously rotatable at predetermined intervals in the axial direction of the rotating shaft, and in a circumferential direction and a radial direction of the discs; A number of agitating blades having a predetermined interval, and mounted to protrude in the axial direction of the rotating shaft,
It is characterized by having.

According to a fifth aspect of the present invention, there is provided a water level detecting means for detecting a water level in the water storage tank, and an adsorbing agent mixed water replenishing means for replenishing the adsorbing agent mixed water in the water tank. Supply of the adsorbing agent mixture water from the water storage tank to the wet ion exchange means by operation of the agent mixture water supply means, and adsorption treatment agent mixing based on the water level drop detection signal of the water tank detected by the water level detection means The water level of the water storage tank is always maintained at a predetermined level in cooperation with the replenishment of the adsorbent mixed water from the water replenishment means to the water storage tank.

According to the first aspect of the present invention, the contaminated air is taken into the closed casing, which is depressurized from the contaminated air intake by the exhaust means, flows down the purification passage, and the adsorption treatment agent mixed water supply means is provided. Pass through the position. The wet ion exchange means is supplied with the adsorbent mixed water from the adsorbent mixed water supply means, and the adsorbent mixed water introduced into the adsorbent mixed water introduction path of the rotating shaft by the adsorbent mixed water supply means. The water is ejected in a radially outward direction while rotating from a plurality of ejection nozzles, comes into contact with the contaminated air, and is stirred by a number of stirring blades. Thereby, the water content of the adsorbent mixed water is fined, the contact state between the contaminated air and the adsorbent mixed water is improved, and the adsorption of the harmful substances and the odorous components by the adsorbent mixed water is promoted. At the same time, the water content of the adsorbing agent mixed water is refined, so that the action of adsorbing the harmful substances and odor components by ion exchange in the wet ion exchange means is enhanced. Most of the admixture of the adsorbent mixed with the harmful substances and odor components is converted to water droplets by dropping into a water storage tank and collected. The water droplets of the adsorbing agent mixed water, which have not dropped into the water storage tank and adsorbed the harmful substances and odor components, flow down to the installation position of the stirring means and are stirred here. Thereby, the water droplet is further miniaturized. Since the water droplets are miniaturized in this way and the installation position of the stirring means is reduced in pressure from the installation position of the wet ion exchange means, a secondary ion exchange action occurs and flows down to the installation position of the stirring means. The remaining harmful substances and odorous components in the air that have been absorbed are absorbed to form water droplets. Most of the adsorbent mixed water that has become a water droplet by adsorbing the remaining harmful substances and the remaining odorous components falls into the water storage tank and is collected. A small amount of mist that does not fall into the water tank but adsorbs residual harmful substances and residual odor components and flows down with the air is collected by the mist collecting means, and only the purified air is removed from the purified air outlet. Exhausted.

According to the second aspect of the present invention, since the adsorbing agent mixed water is constituted by a mixed liquid of ceramics having a particle diameter of 1 μm or less and water, the adsorbing action of harmful substances and odor components is promoted. .

According to the third aspect of the present invention, since the water containing the hydrogen ion in the range of PH7 to PH8 is used to constitute the adsorbent-mixed water, the action of adsorbing harmful substances and odorous components is reduced. Can be stabilized.

According to the fourth aspect of the present invention, the finely divided water droplets of the adsorbent mixed water that have been entrained with the air without falling into the water storage tank in the upstream region are stirred by the many stirring blades. Further miniaturization is possible.

According to the fifth aspect of the present invention, the water level of the water-absorbing agent mixed water stored in the water storage tank is exerted by maintaining the water level of the water storage tank at a predetermined level. The harmful substances and odorous components can be taken in from the air that comes into contact with the adsorbing agent mixed water.

[0015]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a side view of the air purifying apparatus according to the present invention with a casing side wall removed, FIG. 2 is a plan view of FIG. 1, and FIG. In these figures, the air purifying device includes a closed casing 1, an exhaust means 2,
The apparatus includes a wet ion exchange unit 3, a stirring unit 4, a mist collection unit 5, an adsorption agent mixed water supply unit 6, a water storage tank 7, a reflux system 8, a separation unit 9, and a water level detection unit 100.

The sealed casing 1 is provided with a contaminated air inlet 10 and a purified air outlet 11, and the contaminated air inlet 10 and the purified air outlet 11 communicate with each other via a purification passage 12. The purification passage 12 has a first zone 12A, a second zone 12B, a third zone 12C, and a fourth zone 12D, and the first zone 12A and the second zone 12B have a lower side made of a wire mesh or a plant fiber material. Partitioned from the water tank 7 by the screen 13A formed,
The upper side is separated from the inside of the closed casing 1 by a cover 13B, and is separated from the second zone 12B by a first vertical partition plate 13D having an opening 13C at the lower end. The lower end of the second zone 12B is open to the water storage tank 7, and the second zone 12B and the third zone 1
2C is partitioned by a second vertical partition plate 13F having an opening 13E at the upper end. Further, the third zone 12C and the fourth zone 12D are connected to the third partition plate 13 in the vertical direction.
Openings 13H, 13I at the lower end parted by G
Are in communication with each other.

On the other hand, a filter 14 is provided in the contaminated air intake port 10, and a suction port of the exhaust means 2 formed of a fan or a blower is connected to the purified air intake port 11. In addition, the second zone 12B and the third zone 12
A filter 15 is attached to an opening 13E provided at the upper end of a second partition plate 13F for partitioning C.

As shown in FIGS. 1, 2 and 4, the wet ion exchange means 3 is provided in the first zone 12A of the purification passage 12.
And a pair of upper and lower rotating bodies arranged at the same position. That is, each of these rotating bodies crosses the first zone 12A of the purification passage 12, penetrates both side walls of the closed casing 1 in a liquid-tight manner, and is rotatably supported and rotatably supported. A plurality of (for example, five) disks 31 attached at predetermined intervals in the axial direction so as to be rotatable simultaneously by, for example, a key connection (not shown), and predetermined in the circumferential direction and the radial direction of these disks 31. A plurality of stirring blades 32 which are spaced apart and are mounted so as to protrude in the axial direction of the rotating shaft 30;
From the one end side to the vicinity of the mounting position of the disk 31 on the other end side, an adsorption treatment agent mixed water introduction passage 33 composed of a blind through-hole extending in the axial direction is formed, and communicates with the adsorption treatment agent mixture water introduction passage 33. , The plurality of fountain nozzles 34
The rotating shaft 30 has a predetermined interval in the circumferential direction and the axial direction, and is mounted so as to be capable of fountain in a radially outer direction of the rotating shaft 30. Further, an outlet of the adsorbent mixed water supply means 6 described later is connected to the adsorbent mixed water introduction passage 33 of each of the pair of rotating shafts 30 via a swivel joint 35. Further, the pair of rotating shafts 30 is
6 and 36 are configured to be separately driven to rotate in the directions of arrows R1 and R2.

As shown in FIGS. 1, 2 and 5, the stirring means 4 comprises a plurality (for example, three) of rotating bodies which are vertically arranged separately in the second zone 12B of the purification passage 12. I have. That is, each of these rotating bodies crosses the second zone 12B of the purification passage 12 and
A rotating shaft 40 rotatably supported by penetrating both side walls of the rotating shaft in a liquid-tight manner, and having a predetermined interval in the axial direction of the rotating shaft 40, for example, by a key connection (not shown) so as to be simultaneously rotatable. A plurality of (eg, five) disks 4 attached
1 and a number of agitating blades 42 having predetermined intervals in the circumferential direction and the radial direction of the disk 41 and protruding and attached in the axial direction of the rotating shaft 40. In addition, the three rotating shafts 40 are respectively driven by arrows R by motors 44 directly connected via couplings 43.
It is configured to be separately driven to rotate in directions of R1, R2, and R3.

As shown in FIGS. 1 and 2, the mist collecting means 5 includes a plurality of (for example, four) permeable containers 50 which are vertically separated and arranged in a fourth zone 12D of the purification passage 12. A trapping material 51 made of metal fibers or metal fine particles filled in the permeation container 50 is provided.

As shown in FIG. 3, the adsorbing agent mixed water supply means 6 includes an adsorbing agent mixed water supply pump 60, a suction pipe 61 connected to the suction port of the pump 60, and a discharge port of the pump 60. And a discharge pipe 62 connected thereto. The suction pipe 61 is connected to the water storage tank 7 via a reflux system 8 provided with a separating means 9. The pair of rotating shafts 30 in the exchange means 3 are connected to the respective adsorbing agent mixture water introducing passages 33.

The water tank 7 is replenished with the adsorbent mixed water from the adsorbent mixed water replenishing means 63. The adsorbing agent mixed water replenishing means 63 includes a tank 63A, a replenishing pump 63
B, and a mixed solution of water having a hydrogen ion concentration in the range of PH7 to PH8 and ceramics having a particle size of 1 μ or less is stored in the tank 63A.

As shown in FIG. 3, the water level detecting means 100 is for detecting the water level of the water storage tank 7 and constantly maintaining the water level of the water storage tank 7 at a constant level WL. A water level detection signal detected by these water level meters is input to a controller (not shown), and based on the input water level detection signal,
A rotation speed control signal is output to the pump 60 of the adsorption treatment agent mixed water supply means 6, or the discharge pipe 62 and the suction pipe 6
By outputting an opening control signal to a valve provided in the apparatus 1, it works to adjust the supply amount of the adsorbent mixed water, and when the water level of the water storage tank 7 is lowered, this lowered water level Is detected and input to the controller, and the replenishment pump 63B of the adsorption treatment agent mixed water replenishment means 63 is operated based on the inputted water level decrease detection signal to store the adsorption treatment agent mixed water in the tank 63A. The tank 7 is replenished so that the water level in the water tank 7 is constantly maintained at a constant level WL. Thereby, the function of taking in harmful substances and odor components by water in the water storage tank 7 can be exhibited.

Next, the operation of the above configuration will be described.
1 to 5, by the operation of the exhaust means 2, the contaminated air passes through the filter 14 from the contaminated air intake 10, is taken into the closed casing 1, and flows down the purification passage 12. As the contaminated air passes through the filter 14,
Solid particles having a large particle size are collected by the filter 14.

On the other hand, the two motors 36, 36 are started to rotate the pair of rotating shafts 30, 30 of the wet ion exchange means 3 in a predetermined rotating direction (R1, R2), and the three motors 44, Is started, the three rotating shafts 40 of the stirring means 4 are rotated in predetermined rotation directions (R1, R2, R3), and the adsorption treatment agent mixed water supply pump 60 of the adsorption treatment agent mixed water supply means 6 is turned on. drive.

Thus, the mixed water of the adsorption treating agent in the water storage tank 7 is rotated by the rotating shafts 30, 30 in the wet ion exchange means 3.
Is introduced into the adsorption treatment agent mixed water introduction passage 33, and is ejected radially outward while rotating from a plurality of fountain nozzles (holes) 34, between the wet ion exchange means 3 and the contaminated air intake 10 in the purification passage 12. A barrier B is formed which acts to slightly prevent the contaminated air from flowing into the purification passage 12.
For this reason, the wet ion exchange means 3 in the purification passage 12
The depressurizing action on the downstream side from the installation position of is increased. Also,
The adsorbent mixed water jetted from the plurality of fountain nozzles (holes) 34 comes into contact with the contaminated air flowing down the first zone 12A and is stirred with the air by the many stirring blades 32. As a result, the water content of the adsorbent mixed water is fined, the contact state between the contaminated air and the adsorbent mixed water is improved, and the adsorption of the harmful substances and odor components in the contaminated air by the adsorbent mixed water is improved. In addition to promoting harmful substances and odor components from contaminated air, the harmful substances and odor components are adsorbed and converted into water droplets by ion exchange between the harmful substances and odor components and the adsorbent mixture water. Remove. Since the admixture of the adsorbent is composed of a mixture of ceramic and water having a particle diameter of 1 μ or less, the admixture of the adsorbent is composed of a mixture of ceramic and water having a particle diameter of more than 1 μm. In comparison, the action of adsorbing harmful substances and odor components is promoted, and the use of water having a hydrogen ion concentration in the range of PH7 to PH8 enables the adsorption action of harmful substances and odor components to be stabilized. . That is, when water having a hydrogen ion concentration of less than PH7 is used, the adsorption action of harmful substances and odor components becomes unstable, and when water having a hydrogen ion concentration exceeding PH8 is used,
Adsorption of harmful substances and odorous components becomes unstable.

Most of the adsorbent mixed water, which is formed by adsorbing harmful substances and odorous components in the first zone 12A to form water droplets, passes through the screen 13A and falls into the water storage tank 7 to be collected. The water droplets of the adsorption treatment agent mixed water that have not fallen into the water storage tank 7 flow into the second zone 12B from the opening 13C and flow upward, and are stirred by the many stirring blades 42 in the stirring means 4. Thereby, the water droplet is further miniaturized. In this way, the water droplets are made finer, and the second zone 12B where the stirring means 4 is installed is located in the first zone 12 where the wet ion exchange means 3 is installed.
A is located downstream of the first zone 12A.
Since the pressure is lower than the pressure of
The secondary ion exchange action occurs at the installation position of the stirrer, and the remaining harmful substances and residual odor components in the air flowing down to the installation position of the stirring means 4 are adsorbed to form water droplets.

Most of the adsorbent mixed water, which is formed by adsorbing the residual harmful substances and the residual odor components to form water droplets, falls into the water storage tank 7 and is collected.

The fine water droplets of the adsorbent mixed water that have not fallen into the water tank 7 in the second zone 12B pass through the filter 15 together with the air, flow into the third zone 12C, and flow downward. In the third zone 12C, a plurality of fins 12c are arranged in a staggered manner in the front-rear direction, and are arranged to be inclined upward at predetermined intervals in the vertical direction. Therefore, the air and fine water droplets flowing into the third zone 12C meander downward and flow down, while fine water droplets still remaining in the air are collected on the upper surface of the fine 12c, and It passes through the through hole 12c1 formed in the mounting base, and is collected in the water storage tank 7 along the second partition plate 13F and the third partition plate 13G.

After passing through the third zone 12C together with air, the fourth zone
A small amount of mist flowing down the zone 12D is collected by a collecting material 51 made of metal fibers or metal fine particles filled in a plurality of permeation containers 50, and the purified air outlet 11 is formed.
Only the air purified through the exhaust means 2 is exhausted.

On the other hand, as described above, the water level detecting means 100
As a result, the water level of the water storage tank 7 is always maintained at a constant level WL, so that the water storage tank 7 is located below the second zone 12B and at the boundary between the third zone 12C and the fourth zone 12D.
The flowing air comes into contact with the adsorbent mixed water stored in the tank, and the stored adsorbent mixed water exerts a humid action, taking in harmful gases, solid particles, and odor components with the water. be able to.

As described above, the present invention has excellent air purifying ability, so that harmful substances such as harmful gases and solid particles and odor components can be effectively removed from contaminated air.
In addition to obtaining clean air, the structure is simpler and smaller than in a conventional air purification device. Therefore, purification of exhaust gas in existing tunnels, purification of exhaust gas in tunnels under construction, purification of spring gas in tunnels and roads under construction, purification of air in factories where soot and fine solid particles are suspended, and purification of organic odors and chemicals It is suitable for environmental protection including odor purification.

[0033]

As described above, the present invention has an excellent air purifying ability and has a simple structure and can be downsized compared to a conventional air purifying apparatus, so that the present invention is installed. It is possible to reduce the space and reduce the space constraint, thereby avoiding a situation where installation is impossible. In addition, since initial costs and running costs can be reduced, there are effects such as economical advantage and easy maintenance.

[Brief description of the drawings]

FIG. 1 is a side view showing an embodiment of the present invention with a casing side wall removed.

FIG. 2 is a plan view of FIG.

FIG. 3 is a configuration diagram illustrating an example of a supply path and a reflux system of mixed water for an adsorption treatment agent.

FIG. 4 is an enlarged sectional view showing an example of the fountain stirring means.

FIG. 5 is an enlarged sectional view showing an example of an auxiliary stirring means.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Closed casing 2 Exhaust means 3 Wet ion exchange means 4 Stirring means 5 Mist collection means 6 Adsorption agent mixing water supply means 7 Water storage tank 8 Reflux system 10 Contaminated air intake 11 Purified air intake 12 Purification passage 30 Fountain stirring means Rotating shaft 31 of fountain agitating means 32 Many blades of fountain agitating means 33 Adsorption agent mixed water introduction path 34 Fountain nozzle (hole) 40 Rotating axis of agitating means 41 Disk of agitating means 42 Many blades of agitating means 63 Replenishment means for adsorbent mixed water 100 Water level detection means

Claims (5)

(57) [Claims] A sealed casing provided with a contaminated air inlet and a purified air outlet, a purification passage formed inside the sealed casing and communicating the contaminated air intake and the purified air outlet with each other; Exhaust means disposed on the purified air outlet side to exhaust and decompress the interior of the closed casing, wet ion exchange means provided upstream of the purification passage, and provided downstream of the wet ion exchange means And a mist collecting means provided downstream of the stirring means, and supplying the mixed water to the wet ion exchange means and ejecting the mixed water into the purification passage. A mixed water supply means, and a water storage tank provided below the purification passage in the closed casing and for recovering the adsorbent mixed water jetted from the wet ion exchange means to the purification passage. And a reflux system for refluxing the adsorbent mixed water in the water storage tank to the adsorbent mixed water supply means, and the wet ion exchange means is connected to the adsorbent mixed water supply means. A rotating shaft that forms the adsorption treatment agent mixed water introduction passage and is supported across the purification passage; and a predetermined distance in the circumferential direction and the axial direction of the rotation shaft. A plurality of fountain holes which are provided in communication with the introduction path and open to the purification passage; a plurality of disks which are attached to the rotating shaft at predetermined intervals in the axial direction so as to be rotatable simultaneously; An air purification device comprising: a plurality of stirring blades having predetermined intervals in a circumferential direction and a radial direction, and protruding and mounted in an axial direction of the rotating shaft. 2. The air purifying apparatus according to claim 1, wherein the adsorption treating agent mixed water is a mixed liquid of ceramics and water having a particle diameter of 1 μm or less. 3. The air purification device according to claim 1, wherein the hydrogen ion concentration of the water for the adsorbent treatment mixture water is in the range of PH7 to PH8. 4. A rotating shaft rotatably supported across the purification passage, and a plurality of disks mounted so as to be simultaneously rotatable at a predetermined interval in the axial direction of the rotating shaft. 2. A stirrer according to claim 1, further comprising a plurality of agitating blades having predetermined intervals in the circumferential direction and the radial direction of the disks, and mounted so as to protrude in the axial direction of the rotating shaft. Air purification device. 5. A water level detecting means for detecting a water level of the water storage tank, and an adsorption treatment agent mixed water replenishing means for replenishing the adsorption treatment agent mixed water in the water storage tank are provided. Supply of the adsorbent treatment agent mixed water from the water storage tank to the wet ion exchange means by operation, and water supply from the adsorption treatment agent mixed water replenishment means based on a water level drop detection signal of the water tank detected by the water level detection means. 2. The air purification device according to claim 1, wherein the water level of the water storage tank is constantly maintained at a predetermined level in cooperation with the replenishment of the adsorbent mixed water into the tank.